JP2856579B2 - Packaging bag for film unit with lens - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packaging bag for a film unit with a lens.

[0002]

2. Description of the Related Art The present applicant has provided a film unit with a lens (trade name "Sharan Run Hi", etc.) so that a photograph can be easily taken without carrying a camera. The film unit with a lens is a filming unit that incorporates a simple photographing mechanism, in which the film is stored in advance, and a paper box for exterior is placed on top of it. Further, the photographed film is taken out by breaking or disassembling the part of the photographing unit main body.

[0003] Such a film unit with a lens is enclosed in a wrapping bag called a gusset bag at the time of sale, and is displayed at a store hanging on a hanger for displaying the product together with the wrapping bag. This packaging bag is required to have a moisture-proof function to protect the film stored in the lens-fitted film unit from moisture. Therefore, an aluminum sheet is used as a material of the packaging bag for the film unit with the lens. For example, as shown in FIG.
A packaging material provided with a polyethylene (PE) layer 3 on the front and back, a polyethylene terephthalate (PET) layer 4 on the front surface, and an ethylene vinyl alcohol (EVA) layer 5 on the back surface is often used. Such a packaging material has a high moisture-proof function and is suitable as a material for a packaging bag for a film unit with a lens, but since the tear strength is relatively large,
Considering the ease of opening, a notch is provided at the end of the packaging bag to trigger tearing at the time of opening.

FIGS. 4A, 4B, and 4C show the appearance of a conventional packaging bag for a film unit with a lens. In the example shown in FIG. 2A, a hole 7 for inserting a hanger is formed above the packaging bag 6, and a notch 8 for opening is provided at the upper end. In this example, notch 8 is hole 7
Is provided on the notch 8, and when the seal is opened from the notch 8, the tear is easily broken by the hole 7. Therefore, a notch 9 is further provided at the edge of the hole 7. In the example of FIG. 2B, a notch 10 is provided at the lower end of the packaging bag 6. Since the notch 10 is located at a position off the hole 7, if the notch 10 is opened so as to make a straight line tear,
The film unit with the lens can be easily taken out. In the example shown in FIG. 2C, a notch 12 is provided in the sealing portion 11 on the back side of the packaging bag 6, and the packaging bag 6 is torn laterally.

[0005]

However, FIG. 4 (A)
In the case of the packaging bag, after tearing from the notch 8, it is often necessary to further tear from the notch 9, and the opening operation is troublesome. In the example of FIG. 4B, the notch 10 is hard to find because it is located at the lower end of the packaging bag.
There is also a drawback that the cut mark 10a is unsightly when displayed because it is located at the upper end of the packaging bag. In the example of FIG. 4 (C), the notch 12 is also difficult to find, and there is a disadvantage that it is difficult to open the tearing sideways. Furthermore, in any of the examples, the tearing direction of the packaging material is not always straight, and the tear often shifts immediately after the tearing.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide a packaging bag for a film unit with a lens which is excellent in opening property.

[0007]

SUMMARY OF THE INVENTION The present invention in attaining the above object, the insertion hole of the display hanger in film unit packaging bag for material provided on the upper side surface
The layer is given uniaxial stretchability from the upper end to the lower end
Add a film sheet to the aluminum layer
A multi-layer structure having a memory sheet is used, and a notch for opening is provided at the upper end of the packaging bag and at a position off the insertion hole.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG. 1 showing the appearance of a packaging bag for a film unit with a lens using the present invention, an insertion hole 7 for a display hanger is provided at the upper end of the packaging bag 15 and an opening is provided at the upper end. Notch 16 is provided. The notch 16 is provided at a position outside the range of the width D of the insertion hole 7 as illustrated. Reference numeral 16a indicates a notch mark.

FIG. 2A showing the layer structure of the packaging bag 15.
In the packaging bag 15, the aluminum sheet 2 is laminated (or pasted) with a longitudinally uniaxially stretchable polypropylene (PP) layer 18 on the surface thereof, and the polyethylene (PE) layer 3 is further laminated on the backside thereof. (P
E) A layer structure in which the layers 19 are stacked. The PP layer 1
Since the extending direction of the PE layer 8 and the PE layer 19 is the vertical direction in FIG. 1, when the packaging bag 15 is torn from the notch 16, a tear is formed straight along the extending direction as shown by a broken line X in FIG. , Do not shift sideways. As shown in FIG. 2B, the layer structure of the packaging bag 15 includes a PE layer 3 on the front side of the aluminum sheet 2, a uniaxially stretchable polypropylene (PP) layer 18, and a PE layer 3 on the back side. , An ethylene vinyl alcohol (EVA) layer 20 may be provided.

When the packaging bag 15 is torn from the notch 16 at the time of opening, the molecular arrangement, which is a characteristic of the longitudinally uniaxially stretched film, matches the tearing direction.
Go straight down to the bottom edge and do not sway sideways. Therefore, as shown in FIG. 3, the side surface in the longitudinal direction of the packaging bag 15 is torn cleanly, and the film unit 25 with the lens packaged therein can be easily taken out.

[0011]

As described above , the packaging bag of the present invention has a surface layer that has a uniaxially stretchable property from the upper end to the lower end.
Multi-layered packaging material with a thin film sheet
Is, since the notches provided at the upper end of the packaging bag for opening is located at a position deviated from the insertion hole of the display hanger, when performing opening, Ru can be torn straight towards the lower end of the packaging bag from the top . In addition, packaging materials with a multilayer structure
Aluminum sheet is used for moisture-proof function
Not only can secure it, but also when opening
Has vertical uniaxial stretchability in the vertical direction.
It can be easily torn with the sheet.

[Brief description of the drawings]

FIG. 1 is a perspective view of a packaging bag using the present invention.

FIG. 2 is a cross-sectional view illustrating a layer structure of the packaging material of the present invention.

FIG. 3 is a perspective view showing an opened state of the packaging bag of the present invention.

FIG. 4 is a perspective view showing a conventional packaging bag.

FIG. 5 is a sectional view showing a layer structure of a conventional packaging material.

[Explanation of symbols]

 2 Aluminum sheet 3 PE layer 4 Projection 6 Packaging bag 7 Insertion hole 8, 9, 10, 12 Notch 15 Hoso bag 16 Notch 18 PP layer (uniaxially stretchable) 19 PE layer (uniaxially stretchable) 20 EVA layer (uniaxially stretchable) sex)

Continuation of front page (58) Field surveyed (Int.Cl. ⁶ , DB name) G03C 3/00

Claims (1)

(57) [Claims] 1. A packaging bag in which a film unit with a lens in which a film is previously stored is hermetically packaged in a photographing unit body incorporating a photographing mechanism, and a through hole for a display hanger is provided at an upper end side. a bag of material, having a film sheet having a longitudinal uniaxial stretching property from the upper side in the surface layer toward the lower end, and with use of a multilayer structure having an a Le mini um sheet lower than this, the opening Wherein a notch for the lens is provided at an upper end of the packaging bag and at a position separated from the insertion hole.